WO2014110995A1 - Charging method, mobile device, charging device and charging system - Google Patents

Abstract

A charging method, mobile device and charging device, the mobile device comprising: a battery (110) and a connector (120); the connector (120) comprises a charging pin (V1) and a ground pin (G1); when the charging pin (V1) establishes a connection with the output pin of a charging device via a charging cable or a desktop charger, the charging pin (V1) receives a first current signal transmitted by the output pin of the charging device, and transmits the first current signal to the anode pin (Vbat) of the battery (110) to charge the battery (110). The method reduces the heat loss of a mobile device.

Description

 Charging method, mobile device, charging device and charging system The application request is submitted to the Chinese Patent Office on January 18, 2013, and the application number is

201310018595.9, the entire disclosure of which is hereby incorporated by reference in its entirety in its entirety in the the the the the the the the the the Technical field

 The present invention relates to the field of communications technologies, and in particular, to a charging method, a mobile device, a charging device, and a charging system. Background technique

 Currently, users typically connect a mobile device (eg, a cell phone, a tablet, etc.) to an external power source via a charging device (eg, a charger) to enable charging of the mobile device; or the user passes the mobile device through a universal serial bus (Universa) l Ser ia l BUS, referred to as: USB) The USB interface is connected to an external device, and can also implement data interaction between the mobile device and the external device or enable charging of the mobile device.

 Since the current charging circuit is concentrated on the mobile device side, according to the current ideal case, the maximum conversion efficiency of the charging circuit is calculated as 93%, the charging circuit on the mobile device side will generate a heat loss of 0.7 W, causing the mobile device to be in the process of charging. A fever problem is formed, which makes the user feel uncomfortable.

 In addition, with the rapid development of mobile devices, the battery capacity is getting larger and larger, and the charging time is getting shorter and shorter. If the charging circuit is used to charge the mobile device, the charging time is too long. Therefore, the latest USB The standard adds a USB power supply standard, increases the supply voltage to 20V, and increases the supply current to 5A, enabling fast charging of mobile devices in a short period of time. However, due to the large increase in supply voltage and supply current, mobile devices are enabled. The problem of heat generation during charging is more serious. If the current supply is 20V/5A for mobile devices, the charging circuit on the mobile device side will generate 7W of heat loss. This heat loss is the current movement. The device cannot be tolerated.

In order to solve the problem that the current mobile device is heated during charging, and also to make the mobile The device adapts to the charging mode after the supply voltage and the supply current are increased, and the cooling device such as graphite or air cooling is used on the side of the mobile device to reduce the heat loss generated by the mobile device during the charging process. However, this method leads to the mobile device. The volume increases, and when the charging current continues to increase, the heat loss of the mobile device cannot be fundamentally reduced, causing limitations in the prior art. SUMMARY OF THE INVENTION Embodiments of the present invention provide a charging method, a mobile device, a charging device, and a charging system, which are used to implement a large current charging of a mobile device, and reduce the heat loss of the mobile device as much as possible, thereby facilitating the use of the user, and solving the present problem. There are technical limitations.

 In a first aspect, an embodiment of the present invention provides a mobile device, where the mobile device includes: a battery and a connector;

 The connector includes a charging pin and a ground pin;

The charging pin receives a first current signal transmitted by an output pin of the charging device, and transmits the first current signal to a positive pin of the battery to charge the battery.

In a first possible implementation, the mobile device further includes: an analog switch;

 The charging pin receives a first current signal transmitted by an output pin of the charging device, and transmits the first current signal to a positive pin of the battery through the analog switch, thereby charging the battery .

In conjunction with the first possible implementation of the first aspect, in a second possible implementation, the mobile device further includes: a charging circuit and a universal serial bus USB interface; a positive pin of the battery and the The charging pin is disconnected, and an output pin of the charging circuit is connected to a positive pin of the battery through the analog switch; The input pin of the charging circuit is connected to the USB interface, receives a second current signal transmitted by the USB interface, and passes through an output pin of the charging circuit and the analog switch to a positive pin of the battery The second current signal is transmitted to charge the battery.

 With reference to the first aspect or the first and second possible implementation manners of the first aspect, in a third possible implementation, the mobile device further includes: a controller and a voltage conversion circuit; One end is connected to the charging pin, and when the other end is connected to the controller, the voltage of the charging pin is converted and transmitted to the controller.

 In conjunction with the third possible implementation of the first aspect, in a fourth possible implementation, the controller further includes: a bus interface; the connector further includes: a single-wire or multi-wire bus pin; a bus interface is connected to the single-wire or multi-wire bus pin of the connector through a bus for transmitting bus data or control signals generated by the controller, so that the charging device receives the bus data or control signal , adjust the output of the first current signal.

 With reference to the first aspect, or the first, second, third, and fourth possible implementation manners of the first aspect, in a fifth possible implementation, the ground pin passes the charging cable Or the charger is connected to the first grounding pin of the charging device;

 The ground pin is connected to a ground pin of the battery and a ground pin of the charging circuit.

 With reference to the first aspect, or the first, second, third, fourth, and fifth possible implementation manners of the first aspect, in the sixth possible implementation manner, the connector is specifically The pin interface is either a multi-contact interface or an interface multiplexed with the USB interface through the analog switch.

 In a second aspect, an embodiment of the present invention provides a charging device, where the charging device includes: a switch charger module and a charging circuit;

 The charging circuit includes an input pin and an output pin;

¾ 夕 食 ¾管 p建立连接 , 以便于利用所述第一电流信号对所述移动设备中的电池进行充电。 The input pin is connected to an output pin of the switch charger module, and configured to receive a first current signal transmitted by an output pin of the switch charger module;

A connection is established to facilitate charging the battery in the mobile device with the first current signal.

 In a first possible implementation, the charging circuit further includes: a bus interface; the bus interface is connected to a single-wire or multi-wire bus pin of the connector in the mobile device through a bus, and is used for receiving Deriving bus data or control signals transmitted by the mobile device;

 The charging circuit is further configured to adjust the first current signal according to the bus data or a control signal.

 With reference to the second aspect, or the first possible implementation manner of the second aspect, in a second possible implementation, the charging circuit further includes: a first ground pin and a second ground pin; The ground pin is connected to the ground pin of the switch charger module.

 With reference to the second aspect or the first and second possible implementation manners of the second aspect, in a third possible implementation manner, the charging circuit is specifically a switch charging circuit or a linear charging circuit.

 In a third aspect, an embodiment of the present invention provides a charging method, where the charging method includes: when connecting, the charging pin receives a first current signal transmitted by an output pin of the charging device; The foot transmits the first current signal to a positive pin of the battery to charge the battery.

 In a first possible implementation manner, when the charging pin of the connector establishes a connection with an output pin of the charging device through a charging cable or a charger, the charging pin receives an output tube of the charging device. After the first current signal is transmitted by the foot, and before the charging pin transmits the first current signal to the positive pin of the battery, the method further includes:

 The analog switch connects the positive pin of the battery to the charging pin.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, the method further includes: When the charging pin of the connector is disconnected from the output pin of the charging device, the die pin is connected to the positive pin of the battery through the analog switch;

 The input pin of the charging circuit receives a second current signal through a USB interface; and transmits the second current signal to a positive pin of the battery to charge the battery.

 With reference to the third aspect or the first and second possible implementation manners of the third aspect, in a third possible implementation manner, the method further includes:

 The controller generates bus data or a control signal;

 The controller transmits the bus data or control signal to the charging device to facilitate adjustment of the output first current signal by the charging device.

 In a fourth aspect, an embodiment of the present invention provides a charging system, the charging system comprising: a mobile device provided according to any of the first aspect of the present invention and the six possible implementation manners of the first aspect, and A charging device provided by any of the second aspect and the three possible implementations of the second aspect.

 Therefore, by applying the charging method, the mobile device, the charging device, and the charging system provided by the embodiments of the present invention, the mobile device is connected to the charging device through a charging cable or a charging device, and receives a large current transmitted by the charging device, thereby performing a battery on the battery. Charging, and charging circuit that provides a large current is not included in the mobile device, but exists in the charging device, so that the mobile device receives only a large current, and reduces the heat loss of the mobile device as much as possible. Furthermore, the problem of heat generation of the mobile device in the charging process in the prior art is solved, and the mobile device is adapted to the charging mode after the supply voltage and the supply current are increased, and the prior art solution is also enriched.

DRAWINGS 1 is a schematic structural diagram of a mobile device according to Embodiment 1 of the present invention. FIG. 2 is a schematic structural diagram of a mobile device according to Embodiment 2 of the present invention.

 FIG. 3 is a schematic structural diagram of a mobile device according to Embodiment 3 of the present invention;

 FIG. 4 is a schematic structural diagram of a mobile device according to Embodiment 4 of the present invention;

 FIG. 5 is a schematic structural diagram of a mobile device according to Embodiment 5 of the present invention;

 6 is a schematic structural diagram of a charging device according to an embodiment of the present invention;

 FIG. 7 is a schematic diagram of a charging method according to an embodiment of the present invention. FIG. 8 is a flowchart of a charging method according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS In order to make the objects, technical solutions, and advantages of the present invention more comprehensible, the detailed description of the embodiments of the present invention will be further described below.

 The following is a schematic diagram of a mobile device according to an embodiment of the present invention. FIG. 1 is a schematic structural diagram of a mobile device according to an embodiment of the present invention.

 The implementation body in the embodiment shown in Fig. 1 is a mobile device. In Figure 1, the mobile device includes the following components: a battery 110 and a connector 120.

 The connector includes a charging pin VI and a ground pin G1; the charging pin receives a first current signal transmitted by an output pin of the charging device, and transmits the first current signal to a positive pin of the battery The first current signal, in turn, charges the battery.

 Specifically, in the embodiment of the present invention, the charging pin of the connector and the charging cable of the battery are specifically current signals capable of withstanding high voltage and high current, wherein, by way of example and not limitation, the charging line The cable can withstand a large current signal of 25V / 5A, and in actual applications, it can exceed the high current signal of 25V/5A.

It should be noted that, in the embodiment of the present invention, the charging device is connected to a common power source. The charging circuit includes a charging circuit and a charging device for providing electrical energy. The charging circuit in the charging device can provide a large current signal, and the first current signal can be specifically 5A. High current signal.

 Since the mobile device in the embodiment of the present invention can directly receive the large current supplied by the charging device through the connector, thereby shortening the charging time, and the charging circuit providing the large current does not exist in the mobile device, but exists in the charging device, so that Mobile devices only receive large currents, which in turn minimizes heat loss.

 Therefore, by applying the mobile device provided by the embodiment of the present invention, the mobile device is connected to the charging device through a charging cable or a charging device, receives a large current transmitted by the charging device, and then charges the battery thereof, and does not include the mobile device. A charging circuit that provides a large current is present in the charging device such that the mobile device receives only a large current, minimizing the heat loss of the mobile device. Furthermore, the problem of heat generation of the mobile device in the charging process in the prior art is solved, and the mobile device is adapted to the charging mode after the supply voltage and the supply current are increased, and the prior art solution is also enriched.

 Optionally, based on the foregoing embodiment, the mobile device further includes: an analog switch 210. As shown in Figure 2, the analog switch in Figure 2 can be a single-pole, single-throw switch, specifically implemented with a field effect transistor.

 As shown in Figure 2, the lead EN is taken from the charging pin VI of the connector, and the lead EN is connected to the switch of the analog switch. When the charging pin VI is connected to the output pin VI of the charging device through the charging cable or the charger, The voltage of the lead EN changes, triggering the analog switch to close, and connecting the positive pin of the battery and the charging pin VI of the connector.

 When the connector is not connected to the charging device, the analog switch 210 is turned off, and the ground pin G1 of the connector is connected to the ground pin G2 of the battery.

 The charging pin receives the first current signal transmitted by the output pin of the charging device, and transmits the first current signal to the positive pin of the battery through the analog switch, thereby charging the battery.

On the basis of the foregoing embodiment, the analog switch 210 is added, when the charging pin passes the charging cable When the charger is connected to the output pin of the charging device, the analog switch is triggered to connect the positive pin of the battery to the charging pin to prevent the connector from leaking when not charging.

 It can be understood that the lead EN is taken out from the charging pin VI of the connector, and the lead EN is connected to the switch of the analog switch. If the voltage of the lead EN jumps from a low level to a high level, the charging pin VI is indicated. The connection has been established with the charging pin of the charging device via the charging cable or the charger; if the voltage of the lead EN has changed from high to low, the charging pin VI has been connected to the output pin VI of the charging device. Disconnect.

 The charging pin VI is connected to the output pin VI of the external charging device through a charging cable or a charger, so that the charging pin VI receives the first current signal, thereby charging the battery.

 Optionally, based on the foregoing embodiment, the mobile device further includes: a charging circuit 310 and a universal serial bus USB interface 320. As shown in Figure 3, the analog switch in Figure 3 is a single-pole, double-throw switch, specifically implemented by a FET.

 As shown in FIG. 3, when the connector is not connected to the charging device, the positive pin Vba t of the battery is connected to the output pin V2 of the charging circuit through an analog switch, and the input pin V3 of the charging circuit is connected to the USB interface, and the charging circuit The ground pin G3 is connected to the ground pin G2 of the battery and the ground pin G1 of the connector, the charging pin VI of the connector is suspended, one end of the voltage conversion circuit is connected to the charging pin VI, and the other end is connected with the voltage tube of the controller. The foot Vdet is connected.

 Based on the foregoing embodiment, the charging circuit and the universal serial bus USB interface are added. Increase the charging circuit and USB interface. When the charging pin VI is disconnected from the output pin VI of the charging device, the battery can still be charged through the USB interface. At the same time, data interaction with other mobile devices can also be performed through the USB interface. .

When the charging pin VI is disconnected from the output pin VI of the charging device, the analog switch disconnects the positive pin Vba t of the battery from the charging pin VI, the charging circuit The output pin V2 is connected to the positive pin Vba t of the battery through the analog switch; the input pin V3 of the charging circuit is connected to the USB interface, and receives a second current signal transmitted by the USB interface, And passing through the output pin V2 of the charging circuit and the analog switch The second current signal is transmitted to the positive pin Vbat of the battery to charge the battery.

 It should be noted that, in the embodiment of the present invention, the charging circuit 310 in the mobile device is configured to provide a DC current signal required by the battery, and specifically, the charging circuit in the existing mobile device may be used, so as not to move The device generates unacceptable heat losses due to high current charging, and the charging circuit in the mobile device is set to provide a small current signal.

 It should be noted that, in the embodiment of the present invention, the mobile device (for example, a mobile phone, a tablet, etc.) can also be connected to other mobile devices (for example, a desktop computer, a notebook, etc.) through a USB interface, and the other The mobile device can be connected to the normal power source, and the power device is powered by the mobile device in the embodiment of the present invention. The second current signal may be a small current signal of 2A. The charging device in this embodiment includes providing a charging circuit, and the charging circuit can provide a large current signal, such as a current signal of 5A.

 Since the mobile device in the embodiment of the present invention can directly receive the large current supplied by the charging device through the connector, thereby shortening the charging time, and the charging circuit that provides a large current does not exist in the mobile device, but exists in the charging device, The mobile device only receives a large current, thereby minimizing the heat loss. Furthermore, the charging circuit provided by the mobile device is a charging circuit capable of maintaining a low current signal of 2 A, and thus, the heat loss of the mobile device itself can be further reduced.

 It can be understood that in the mobile device shown in FIG. 3, when the charging pin VI is connected to the output pin VI of the charging device through the charging cable or the charger, the voltage of the lead EN changes.

 Specifically, as shown in FIG. 3, the lead EN is taken out from the charging pin VI of the connector, and the lead EN is connected to the switch of the analog switch. If the voltage of the lead EN jumps from a low level to a high level, The charging pin VI has been connected to the output pin VI of the charging device through the charging cable or the charger; if the voltage of the lead EN jumps from high to low, the charging pin VI has been connected to the charging device. The output pin VI is disconnected.

The charging pin VI is connected to the output pin VI of the external charging device through a charging cable or a charger, so that the charging pin VI receives the first current signal, thereby charging the battery. Optionally, based on the foregoing embodiment, the mobile device further includes: a controller 410 and a voltage conversion circuit 420, as shown in FIG.

 One end of the voltage conversion circuit is connected to the charging pin VI, and the other end is connected to the voltage pin Vdet of the controller, and is used for outputting the charging pin VI through the charging cable or the charging device. When the pin establishes a connection, the voltage of the charging pin is detected, and the voltage is converted and transmitted to the controller, so that the controller explicitly establishes that the mobile device establishes a connection with the charging device.

 In the embodiment of the present invention, the voltage conversion circuit adjusts the detected voltage value of the charging pin to a voltage value that the controller can withstand. For example, the voltage of the charging pin is about 10V, and the voltage that the controller can withstand is 2V, the voltage conversion circuit adjusts the voltage of the charging pin to the 2V voltage that the controller can withstand, so that the controller can make sure that the mobile device has established a connection with the charging device.

 Optionally, based on the foregoing embodiment, the controller further includes: a bus interface; the connector further includes: a single-wire or multi-wire bus pin; the charging device includes a bus interface (not clear in FIG. 4) Draw).

 The bus interface of the controller is connected to the single-wire or multi-wire pin through a bus, and the single-wire or multi-wire bus pin of the connector is also connected to the bus pin of the charging device through a bus. When the connector is connected to the charging device, The bus interface of the controller is connected to the bus interface of the charging device through a single-wire or multi-wire bus pin of the connector, and the bus is used for transmitting bus data or control signals generated by the controller, so as to correspond to the charging device. After receiving the bus data or the control signal, the pin adjusts the output first current signal.

 In a preferred embodiment, the bus may be an internal integrated circuit I2C bus; the single or multi-wire bus pins included in the connector are: I 2 C data pin I2C-DATA and I 2 C clock pin I2C-CLK, As shown in Figure 1.

The I2C data pin I2C-DATA is connected to a bus interface of the controller for transmitting I2C data or a control signal generated by the controller, and the I2C clock pin I2C-CLK is connected to a bus interface of the controller. Transmitting an I2C clock signal generated by the controller to facilitate the After receiving the I 2 C data or control signal and the I 2 C clock signal, the bus interface corresponding to the charging device adjusts the output first current signal.

 Specifically, the mobile device transmits I 2 C data or a control signal and an I 2 C clock to the bus interface corresponding to the charging device through the I 2 C bus and the I 2 C data pin I 2 C-DATA of the connector and the I 2 C clock pin I 2 C-CLK. Signal, in an example, after the mobile device establishes a connection with the charging device through the charging cable, and performs charging, during the charging process, the controller determines that the first current signal provided by the charging device is too large, so that the mobile device cannot bear the time. The controller can notify the charging device of the first current signal required by transmitting the I 2 C data or the control signal and the I 2 C clock signal to the charging device, so that the charging device receives the I 2 C data or the control signal and the I 2 C clock according to the corresponding interface. The signal adjusts the output of the first current signal.

 It can be understood that the above description uses the I 2 C bus as an example to describe the bus interface of the controller and the working process of the bus pins of the connector. In practical applications, the bus interface of the controller and the single or multi-wire bus pins of the connector The connection is not limited to the use of the I 2 C bus, but also the SPI bus.

 Optionally, the ground pin G1 of the connector is connected to the first ground pin G1 of the charging device through the charging cable or the socket, and the ground pin G1 and the ground pin of the battery G2 and the ground pin of the charging circuit are connected to G3.

 Optionally, the connector is specifically a multi-pin interface, or a multi-contact interface, or an interface multiplexed with the USB interface through the analog switch.

Specifically, the connector in the mobile device provided by the embodiment of the present invention may be configured by using multiple interfaces, for example, a multi-pin interface, or a multi-touch interface, or an interface multiplexed with the USB interface through an analog switch. As an example and not by way of limitation, in FIG. 5, the analog switch is multiplexed with the USB interface as a connector, as shown in FIG. In Fig. 5, the analog switch is multiplexed with the USB interface to implement the functions of the connector in the foregoing embodiment. The charging process implemented by the mobile device is that when the mobile device and the charging device are not connected, the analog switch is connected to the charging circuit of the mobile device by default, and the lead EN is taken out from the voltage pin of the controller, and the switch of the lead EN and the analog switch is Connection, when the mobile device and the charging device are connected through a charging cable or a charger, The controller detects that the mobile device is connected to the computer or other USB device for USB charging through the USB cable through the USB ID pin, and keeps the analog switch connected to the charging circuit. When the controller passes the voltage from low level to high level, Disconnect the analog switch from the charging circuit and switch the Vba t pin connected to the battery to complete charging the battery. FIG. 5 is only an example of implementing the connector function by other methods, and is not limited thereto in practical applications.

 In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the detailed description of the embodiments of the present invention will be further described below.

 The charging device provided by the embodiment of the present invention is illustrated by using FIG. 6 as an example. FIG. 6 is a schematic structural diagram of a charging device according to an embodiment of the present invention.

 The main body of the embodiment shown in Fig. 6 is a charging device. As shown in FIG. 6, the charging device includes the following parts: a switch charger module 610, a charging circuit 620.

 In FIG. 6, the output pin V3 and the ground pin G3 of the switch charger module are respectively connected to the input pin V2 of the charging circuit, the second ground pin is connected to G2, and the output pin VI of the charging circuit is passed through the charging cable or The charger is connected to the charging pin VI of the mobile device, and the first ground pin G1 of the charging circuit is connected to the first ground pin G1 of the mobile device through a charging cable or a charger.

 In the charging device, the charging circuit includes an output pin VI and an input pin V2; the input pin V2 is connected to the output pin V3 of the switch charger module for receiving the switch charger a first current signal transmitted by the output pin V3 of the module;

 The output pin VI is connected to the charging pin VI of the mobile device via a charging cable or a cradle to facilitate charging the battery in the mobile device with the first current signal.

Specifically, when the output pin VI of the charging circuit is connected to the charging pin VI of the mobile device through the charging cable or the charger, the output pin VI transmits the carried voltage to the charging pin VI, so that the charging pin VI is The voltage of the connected lead EN changes, and the analog switch in the mobile device is connected to the charging pin VI, so as to transmit the first current signal to the positive pin Vba t of the battery through the analog switch, and then to the mobile device The power supply in the battery is charged. In the embodiment of the present invention, the charging cable is specifically a current signal that can withstand a high voltage and a high current. The charging cable can withstand a large current signal of 25V / 5A, in practical applications. It can also exceed 25V / 5A high current signal.

 Further, the switch charger module in the embodiment of the present invention is configured to connect with a power source, receive an alternating current signal transmitted by the power source, convert the alternating current signal into a direct current signal, and transmit the direct current signal to the charging circuit;

 a charging circuit, configured to receive a direct current signal, convert the received direct current signal into a direct current signal required by the battery in the mobile device, and transmit a direct current signal required by the battery to the mobile device through the charging cable or the charger, and the mobile device transmits The DC signal required by the battery is the first current signal;

 The switch charger module is connected to a normal power source, receives an AC signal transmitted by the power source (for example, 220V AC power), and the switch charger module converts the AC signal into a DC signal (for example, 110V DC), and at the same time, the converted The DC signal is transmitted to the input pin V2 of the charging circuit through the output pin V3.

 The input pin V2 of the charging circuit receives the DC signal transmitted by the switch charger module, converts the DC signal into a DC signal required by the battery according to the charging curve of the battery in the mobile device, and passes through its own output pin VI and charging cable. Or the charger charges the DC signal to the battery to the charging pin VI of the mobile device.

 Here, the charging curve of the battery is a characteristic curve of charging the battery, for example, when the battery is empty (the battery power is 0), at this time, the battery can only accept a small current charging, then the charging circuit is the battery according to the charging curve of the battery. Provide a small current signal; When there is a certain amount of power in the battery (the battery power is 20% of the total battery), at this time, the battery can receive a large current charge, then the charging circuit provides a large battery according to the charging curve of the battery. The current signal of the current.

It should be noted that, in the embodiment of the present invention, the charging device is a charging device that can be connected to a common power source to provide power, wherein, as an example and not by definition, the first current signal may specifically be a large current of 5A. Signal; since, in the embodiment of the present invention, a large current signal will be provided The charging circuit of the number is set in the charging circuit. Therefore, the mobile device can directly receive the large current supplied by the charging device through the connector, thereby shortening the charging time, so as to reduce the heat loss as much as possible while receiving a large current.

 Optionally, the charging circuit further includes: a bus interface;

 a bus interface of the charging circuit is coupled to a bus pin of a connector in the mobile device for receiving bus data or a control signal transmitted by the mobile device;

 The charging circuit is further configured to adjust the first current signal according to the bus data or a control signal.

 In a preferred embodiment, when the bus is an I2C bus, the bus interface of the charging circuit includes: I2C data pin I2C-DATA and I2C clock pin I2C_CLK.

 An I2C data pin I2C-DATA in the charging circuit and an I2C data pin I2C-DATA of the connector in the mobile device, for receiving I2C data or a control signal generated by the controller in the mobile device;

 An I2C clock pin I2C-CLK in the charging circuit is connected to the I2C clock pin I2C-CLK of the connector in the mobile device for receiving an I2C clock signal generated by the controller in the mobile device;

 The charging circuit is further configured to adjust the first current signal according to the I2C data or control signal and the I2C clock signal.

Specifically, the mobile device transmits I2C data or a control signal and an I2C clock signal to the charging device through the I2C bus and the I2C data pin I2C-DATA of the connector and the I2C clock pin I2C-CLK. In one example, the mobile device is charged. After the cable is physically connected to the charging device and charged, the controller determines that the first current signal provided by the charging device is too large during the charging process, so that the controller can transmit the I2C to the charging device when the mobile device cannot bear the load. The data or control signal and the I2C clock signal inform the charging device of the first current signal required, so that the charging device adjusts the output first current signal according to the received transmission I2C data or the control signal and the I2C clock signal, and passes again The charging cable is transmitted to the positive pin VI of the connector in the mobile device. Lose.

 It can be understood that the above-mentioned I 2 C bus is taken as an example to describe the working process of the bus interface of the charging circuit. In practical applications, the bus type is not limited to the I 2 C bus, and may also be an SPI bus or the like.

 Optionally, the charging circuit further includes a first ground pin G1 and a second ground pin G2.

 The first ground pin G1 is connected to the ground pin G1 of the mobile device through a charging cable or a charger;

 The second ground pin G2 is connected to the ground pin G3 of the switch charger module.

 Optionally, the charging circuit is specifically a switch charging circuit or a linear charging circuit. Specifically, in the embodiment of the present invention, a charging circuit capable of providing a large current is disposed in the charging device, thereby reducing heat loss in the mobile device, but since the charging circuit for providing a large current is disposed in the charging device, The heat loss of the charging device is caused. Therefore, in the embodiment of the invention, the charging circuit can be specifically configured as a switching charging circuit or a linear charging circuit, thereby reducing the heat loss of the charging device. Since the switch charging circuit, or the linear charging circuit, is a circuit well known to those skilled in the art, it will not be repeated here.

 Therefore, by applying the charging device provided by the embodiment of the present invention, a charging circuit capable of providing a large current is added to the charging device, and the mobile device transmits a large current through the charging cable, so that the mobile device receives only a large current, which is reduced as much as possible. Heat loss from mobile devices. Furthermore, the problem of heat generation of the mobile device in the charging process in the prior art is solved, and the mobile device is adapted to the charging mode after the power supply voltage and the power supply current are increased, and the prior art solution is also enriched.

 The foregoing various embodiments are mainly based on the mobile device and the charging device, and the charging process is briefly described. Further, the charging process described in the foregoing embodiment can be completed by the connection system diagram of the mobile device and the charging device shown in FIG. As shown in FIG. 7, the mobile terminal includes the foregoing components, and the specific charging process is:

The foregoing describes the connection relationship between the pins inside the mobile device and the inside of the charging device, and will not be repeated here. When the charging pin VI is connected to the output pin VI of the charging device through the charging cable or the charger, the simulation is performed. The switch connects the positive pin Vba t of the battery to the charging pin VI; The electric pin VI receives the first current signal transmitted by the output pin VI of the charging device, and transmits a first current signal to the positive pin Vba t of the battery through the analog switch, thereby charging the battery.

 Further, the mobile device can also communicate with the charging device through the I 2 C bus, and the mobile device transmits the I 2 C data signal and the I 2 C control signal to the charging device through the I 2 C bus, so that the charging device adjusts the output current signal.

 The foregoing describes a charging process performed after the mobile device and the charging device establish a connection through the charging cable. When the mobile device is disconnected from the charging device (not shown), the mobile device can be charged by itself. The circuit receives the second current signal from the USB interface to charge the battery. Since charging the battery through the USB interface is a prior art, it will not be repeated here.

 In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the detailed description of the embodiments of the present invention will be further described below.

 The charging method provided by the embodiment of the present invention is illustrated by using FIG. 8 as an example. FIG. 8 is a flowchart of a charging method according to an embodiment of the present invention. The charging method provided by the embodiment of the present invention is based on the mobile device and the charging device described in the foregoing embodiments.

 As shown in FIG. 8, the charging method specifically includes the following steps: When a pin establishes a connection, the charging pin receives a first current signal transmitted by an output pin of the charging device.

 Further, in the embodiment of the present invention, the charging pin of one end of the connector and the positive charging cable of the battery are specifically current signals that can withstand high voltage and high current, wherein, as an example and not by way of limitation, the charging cable can withstand The 25V/5A high current signal can exceed 25V/5A high current signal in practical applications.

It should be noted that, in the embodiment of the present invention, the charging device is a charging device that can be connected to a common power source to provide electrical energy, wherein, by way of example and not limitation, the first current signal Specifically, it can be a large current signal of 5 A.

 Step 820: The charging pin transmits the first current signal to a positive pin of the battery, and further charges the battery.

 Specifically, the charging pin of the connector is connected to the positive pin of the battery, and after the charging pin receives the first current signal outputted by the output pin of the charging device, the charging pin transmits the first current signal to the positive pin of the battery. , and then charge the battery.

 It can be understood that, because the mobile device in the embodiment of the present invention can directly receive the large current provided by the charging device through the connector, thereby shortening the charging time, and the charging circuit providing the large current does not exist in the mobile device, but exists In a charging device, the mobile device receives only a large current, thereby minimizing heat loss.

 Optionally, the embodiment of the present invention further provides another charging method.

 An analog switch is disposed between the positive pin of the battery and the charging pin, and the charging switch of the connector connects the positive pin of the battery to the charging pin.

 Further, the charging cable is specifically a current signal that can withstand high voltage and high current. The charging cable can withstand a large current signal of 25V/5A as an example and not limited. In practical applications, it can also exceed 25V/5A high current signal.

 The charging pin receives a first current signal transmitted by an output pin of the charging device. Specifically, the charging pin receives a first current signal outputted from an output pin of the charging device through a charging cable or a charger.

 It should be noted that, in the embodiment of the present invention, the charging device is a charging device that can be connected to a common power source and provides power, wherein, by way of example and not limitation, the first current signal may be specifically 5 A. Current signal.

 The charging pin transmits the first current signal to the positive pin of the battery through the analog switch, thereby charging the battery.

Specifically, since the analog switch connects the charging pin of the connector to the positive pin of the battery, After the charging pin receives the first current signal outputted by the output pin of the charging device, the first current signal is transmitted to the positive pin of the battery through the analog switch, thereby charging the battery.

 It can be understood that, because the mobile device in the embodiment of the present invention can directly receive the large current provided by the charging device through the connector, thereby shortening the charging time, and the charging circuit providing the large current does not exist in the mobile device, but exists In a charging device, the mobile device receives only a large current, thereby minimizing heat loss.

 Optionally, the embodiment of the present invention further includes the step of charging the battery through the USB interface when the charging pin of the connector is disconnected from the output pin of the charging device, and the mobile device can also be connected to the USB through the USB interface. Mobile devices for data interaction.

 When the charging pin is disconnected from the output pin of the charging device, the analog switch disconnects the positive pin of the battery from the charging pin, and the output pin of the charging circuit passes the simulation A switch is coupled to the positive pin of the battery.

 The input pin of the charging circuit receives the second current signal through the USB interface.

 Specifically, the input pin of the charging circuit is connected to the USB interface, and the second current signal is received through the USB interface.

 Further, in the embodiment of the present invention, the mobile device (for example, a mobile phone, a tablet, etc.) can also be connected to other mobile devices (for example, a desktop computer, a notebook, etc.) through a USB interface, and the other mobile device The second current signal may be a small current signal of 2A. The second current signal may be a small current signal of 2A. The second current signal is transmitted to the positive pin of the battery to charge the battery.

Specifically, since the output pin of the charging circuit is connected to the voltage pin of the battery through the analog switch, the input pin of the charging circuit is connected to the USB interface, and after the input pin of the charging circuit receives the second current signal through the USB interface, The output pin and analog switch of the charging circuit pass to the battery The second current signal is input to charge the battery.

 It can be understood that, because the mobile device in the embodiment of the present invention can directly receive the large current provided by the charging device through the connector, thereby shortening the charging time, and the charging circuit providing the large current does not exist in the mobile device, but exists In the charging device, the mobile device only receives a large current, thereby minimizing the heat loss; further, the charging circuit provided by the mobile device is a charging circuit capable of maintaining a low current signal of 2A, thereby further reducing the heat loss of the mobile device itself. . The steps of communication.

 The controller generates bus data or control signals.

 Specifically, in the description process of the foregoing steps 810 to 820, the mobile device establishes a connection with the charging device through the charging cable, and performs charging, and the controller clears the first current signal provided by the charging device during the charging process. Large, so that the mobile device can not afford, the controller generates bus data or control signals.

 Using a bus interface and a single or multi-wire bus pin of the connector, the controller transmits the bus data or control signal to a bus interface of the charging device to facilitate the first output of the charging device The current signal is adjusted.

 Therefore, by applying the charging method provided by the embodiment of the present invention, the mobile device is connected to the charging device through the charging cable, receives a large current transmitted by the charging device, and then charges the battery thereof, and does not include providing a large current in the mobile device. The charging circuit, which is present in the charging device, causes the mobile device to receive only a large current, thereby minimizing the heat loss of the mobile device. Furthermore, the problem of heat generation of the mobile device in the charging process in the prior art is solved, and the mobile device is adapted to the charging mode after the supply voltage and the supply current are increased, and the prior art solution is also enriched.

A person skilled in the art should further appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, which has been pressed in the above description The composition and steps of the examples are generally described in terms of functionality. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

 The steps of a method or algorithm described in connection with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technology Any other form of storage medium known.

 The above described embodiments of the present invention are further described in detail, and the embodiments of the present invention are intended to be illustrative only. The scope of the protection, any modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

Rights request 1. A mobile device, characterized in that: the mobile device includes: a battery and a connector; the connector includes a charging pin and a ground pin;

When , the charging pin receives the first current signal transmitted by the output pin of the charging device, and transmits the first current signal to the positive pin of the battery, thereby charging the battery. 2. The mobile device according to claim 1, wherein the mobile device further includes: an analog switch;

The charging pin receives the first current signal transmitted by the output pin of the charging device, and transmits the first current signal to the positive pin of the battery through the analog switch, thereby charging the battery. . 3. The mobile device according to claim 2, wherein the mobile device further includes: a charging circuit and a universal serial bus USB interface; the positive pin of the battery is disconnected from the charging pin, The output pin of the charging circuit is connected to the positive pin of the battery through the analog switch; The input pin of the charging circuit is connected to the USB interface, receives the second current signal transmitted by the USB interface, and supplies the positive electrode pin of the battery through the output pin of the charging circuit and the analog switch. The second current signal is transmitted to charge the battery. 4. The mobile device according to any one of claims 1 to 3, characterized in that the mobile device further includes: a controller and a voltage conversion circuit; One end of the voltage conversion circuit is connected to the charging pin, and the other end is connected to the controller. When connected, the voltage of the charging pin is converted and transmitted to the controller. 5. The mobile device according to claim 4, wherein the controller further includes: a bus interface; the connector further includes: a single-line or multi-line bus pin; The bus interface is connected to the single-wire or multi-wire bus pins of the connector through a bus, and is used to transmit bus data or control signals generated by the controller, so that the charging device can receive the bus data or control signals. After the signal is generated, the output first current signal is adjusted. 6. The mobile device according to any one of claims 1 to 5, wherein the ground pin is connected to a ground pin of the battery and a ground pin of the charging circuit. 7. The mobile device according to any one of claims 1 to 6, characterized in that the connector is specifically a multi-pin interface, or a multi-contact interface, or is connected to the USB through the analog switch. Interface reuse. 8. A charging device, characterized in that the charging device includes: a switch charger module and a charging circuit; The charging circuit includes an input pin and an output pin; The input pin is connected to the output pin of the switching charger module and is used to receive the first current signal transmitted by the output pin of the switching charger module; so as to use the first current signal to charge the The battery in the mobile device is charged. 9. The charging equipment according to claim 8, characterized in that the charging circuit further includes: a bus interface; The bus interface is connected to the single-line or multi-line bus pins of the connector in the mobile device through a bus connection, and is used to receive bus data or control signals transmitted by the mobile device; The charging circuit is also used to adjust the first current signal according to the bus data or control signal. 10. The charging equipment according to claim 8 or 9, characterized in that: the charging battery The path also includes: the first ground pin and the second ground pin; The first ground pin is connected via the charging cable or where

The second ground pin is connected to the ground pin of the switching charger module. 11. The charging equipment according to any one of claims 8 to 10, characterized in that the charging circuit is specifically a switching charging circuit or a linear charging circuit. 12. A charging method, characterized in that the method includes: when connected, the charging pin receives the first current signal transmitted by the output pin of the charging device; The positive pin transmits the first current signal to charge the battery. 13. The charging method according to claim 12, characterized in that, after the electrical pin of the connector receives the first current signal transmitted by the output pin of the charging device, the charging pin transmits the current signal to the charging pin. Before the positive pin of the battery transmits the first current signal, the method further includes: connecting an analog switch to the positive pin of the battery and the charging pin. 14. The charging method according to claim 13, characterized in that, the method further includes: disconnecting the positive electrode pin of the battery from the charging pin, and the output pin of the charging circuit passing through the analog The switch is connected to the positive pin of the battery; The input pin of the charging circuit receives the second current signal through the USB interface; and transmits the second current signal to the positive pin of the battery, thereby charging the battery. 15. The charging method according to any one of claims 12 to 14, characterized in that the method further includes: The controller generates bus data or control signals; The controller transmits the bus data or control signal to the charging device so that the charging device adjusts the output first current signal. 16. A charging system, characterized in that the charging system includes: a mobile device as described in any one of claims 1 to 7 and a mobile device as described in any one of claims ⁸ to 11 Charging equipment.